Sacred Sword minuses the stat changes in the pokemon (awesome), and doesn't lower your defenses, unlike close combat. Swords Dance is just awesome with Rock Slide. Taunt is really good when you're against amoonguss with rage powder (in which i am against often). And finally, the best move in the bunch, Rock Slide. When you're in a double battle, it hits both pokemon and is great with Swords Dance.

Standard Terrakion, except it devestates Sand better than most (based on calcs, damn PO). Rock Polish and you become faster than Excadrill. Close Combat takes down T-Tar and Excadrill easily, as well as those Steel types you'll find. Stone Edge is STAB of course. And HP Ice takes down Gliscor and Landorus. I mean, Stone Edge and CLose COmbat take down everything else well enough. Do make sure to use with a Rapid Spinner, Forretress or Starmie.

I am amazed that no one is yet to post a choice scarf set, it is one of the most used Terrakion set at the moement and is just as deadly as the Choice band set.
Choice band gives him well over 400 speed allowing it to outrun all non scarfed meaning if pokemon such as Dragonite who havent boosted.
It still has great attack and a close combat from any terrakion hurts, but the def drop is no worry as it wont be in long because of choice.